102 lines
2.4 KiB
C
102 lines
2.4 KiB
C
/*
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* replay-net.c
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*
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* Copyright (c) 2010-2016 Institute for System Programming
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* of the Russian Academy of Sciences.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include "qemu/osdep.h"
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#include "qemu/error-report.h"
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#include "sysemu/replay.h"
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#include "replay-internal.h"
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#include "net/net.h"
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#include "net/filter.h"
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#include "qemu/iov.h"
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struct ReplayNetState {
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NetFilterState *nfs;
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int id;
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};
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typedef struct NetEvent {
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uint8_t id;
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uint32_t flags;
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uint8_t *data;
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size_t size;
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} NetEvent;
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static NetFilterState **network_filters;
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static int network_filters_count;
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ReplayNetState *replay_register_net(NetFilterState *nfs)
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{
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ReplayNetState *rns = g_new0(ReplayNetState, 1);
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rns->nfs = nfs;
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rns->id = network_filters_count++;
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network_filters = g_realloc(network_filters,
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network_filters_count
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* sizeof(*network_filters));
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network_filters[network_filters_count - 1] = nfs;
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return rns;
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}
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void replay_unregister_net(ReplayNetState *rns)
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{
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network_filters[rns->id] = NULL;
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g_free(rns);
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}
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void replay_net_packet_event(ReplayNetState *rns, unsigned flags,
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const struct iovec *iov, int iovcnt)
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{
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NetEvent *event = g_new(NetEvent, 1);
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event->flags = flags;
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event->data = g_malloc(iov_size(iov, iovcnt));
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event->size = iov_size(iov, iovcnt);
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event->id = rns->id;
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iov_to_buf(iov, iovcnt, 0, event->data, event->size);
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replay_add_event(REPLAY_ASYNC_EVENT_NET, event, NULL, 0);
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}
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void replay_event_net_run(void *opaque)
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{
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NetEvent *event = opaque;
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struct iovec iov = {
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.iov_base = (void *)event->data,
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.iov_len = event->size
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};
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assert(event->id < network_filters_count);
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qemu_netfilter_pass_to_next(network_filters[event->id]->netdev,
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event->flags, &iov, 1, network_filters[event->id]);
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g_free(event->data);
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g_free(event);
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}
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void replay_event_net_save(void *opaque)
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{
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NetEvent *event = opaque;
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replay_put_byte(event->id);
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replay_put_dword(event->flags);
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replay_put_array(event->data, event->size);
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}
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void *replay_event_net_load(void)
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{
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NetEvent *event = g_new(NetEvent, 1);
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event->id = replay_get_byte();
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event->flags = replay_get_dword();
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replay_get_array_alloc(&event->data, &event->size);
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return event;
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}
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